A zoo keeper plays with a newly-born lion cub at a zoo in the southern Gaza Strip city of Rafah, Sept. 9, 2019. (Photos: Xinhua)

A zoo keeper displays two newly-born lion cubs at a zoo in the southern Gaza Strip city of Rafah, Sept. 9, 2019.

Zoo keepers display three newly-born lion cubs at a zoo in the southern Gaza Strip city of Rafah, Sept. 9, 2019.

A zoo keeper displays three newly-born lion cubs at a zoo in the southern Gaza Strip city of Rafah, Sept. 9, 2019.

A zoo keeper plays with a newly-born lion cub at a zoo in the southern Gaza Strip city of Rafah, Sept. 9, 2019.

A newly-born lion cub is seen at a zoo in the southern Gaza Strip city of Rafah, Sept. 9, 2019.